Apparatus for cutting pipes



(No Model.)

S. P. DENISON.

APPARATUS FOR CUTTING PIPES.

No. 432,480. Patented July 15, 1890.

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SYLVESTER P. DENISON, OFBROOKLYN, NEYV YORK, ASSIGNOR TO GEORGE R. THOMPSON, OF PHILADELPHIA, PENNSYLVANIA.

APPARATUS FOR CIUTTENG PIPES.

SPECIFICATION forming part of Letters Patent No. 432,480, dated July 15, 1890.

Application filed August 10, 1889. Renewed June 23, 1890. Serial No. 856,317. (No model.)

T at whom it may concern: yokes. The sprocket-teeth c on the wheel 0 Be it known that I, SYLVESTER P. DENL pass between the ends of adjoining pairs of SON, of Brooklyn, county of Kings, and State the links I), connecting the cutters a. The of New York, have invented an Improved endless-chain cutter is passed around the Apparatus for Cutting Electrical Oonduitsprocket-pulley in a direction reverse to that Pipes, of which the followingisaspecification. in which it is passed around the pipe, being The object of my invention is to provide crossed, as shown, and as a consequence the for cutting a continuous pipe transversely cutters which bear upon the pipe are turned without cutting through or into a cable lying outwardly on the sprocket-wheel. The shaft 10 therein. 0 of the sprocket-pulley is squared, as shown,

The apparatus is specially designed for use to receive a key or crank for revolving it. in connection with another apparatus shown The chain cutter travels, as will be seen, beaud described in an application filed by me tween the adjacent faces of the yokes D, August 10, 188$),Serial No. 320,555,for cutting which form a guide for it. The chain cutter,

15 longitudinal slits in pipes, the combined obbeing separable at the point 00, is applied ject of the two apparatuses being to out out a around the pipe and sprocket-wheel and its section of acontinuous pipe containing a cable ends connected, as shown in the drawings. of electrical conductors for the purpose of The yokeframe D being clamped upon the making lateral or house connections therepipe by means of the bolts d, the sprocket- 2o withwithout injuring the cable; but obviously pulley frame is adjusted to give the required theinvention is notlimited tosuch special use. tension to the chain cutter by means of the The subject-matter claimed is hereinafter bolts 6, and the sprocket-wheel is rotated by specified. a key or crank applied to its squared end,

In the accompanying drawings, Figure l is and the cutters act upon the pipe. At proper 2 5 a side elevation showing the pipe and contimes the bolts d are loosened and the'frame tained cable in section; Fig. 2, a side or end shifted, so that the cutters may act uniformly elevation from a different point of View, and upon all parts of the pipe.

Fig. 3 a plan View of the apparatus as shown Changes may of course be made in details in Figs. 1 and 2. of construction;but those showuarepreferred. 0 I employ an endlesschain cutter A, made I claim as my invention up of a series of cutters a, connected by pairs 1. The combination, substantially as set of links 5. At :0 the chain is separably joined forth, of the frame, securing devices, substanby means of a screw-bolt to enable it to be tially such as described, for attaching it to a passed around the pipe B and pulley O. pipe, and an endless-chain cutter.

5 The frame D, as shown, consists of two par- 2. The combination, substantially as set allel yokes having ends D, with curved faces forth, of an endless-chain cutter, a wheel over embracing one side of the pipe, their oppowhich the chain of cutters passes, a fran'ie in site portions being arranged on the other side which the wheel is mounted and which is proof the pipe and joinedat the ends by a bolt vided with opposite sidepieces,betweenwhich 0 (Z. Between the ends of the yoke D the a pipe may be clamped, and clamping de- 0 sprocket-pulley frame E is at one end hinged vices,substantiallysuchas described, adapted upon the bolt d and the opposite end carries to clamp a pipe between the opposite side two screw-adjusting bolts e, one bearing pieces. against each of the yokes D. By means of 3. The combination, substantially as set 5 these bolts the swinging frame may be adforth, of a frame, devices, substantially such justed from and toward the yoke-frame D to as described, for connecting it with a pipe, a tighten the cutter-chain that passes over the rotatable sprocket-pulley mounted in an adsprocket-wheelO, having its bearing in the j ustable bearing, and an endless-chain cutter swinging frame. The frame D is clamped to that passes around the pipe and sprocket- 50 the pipe by screw-bolts d working in the two pulley. 10o

10 pipe, the sprocket-pulley, and the endlesschain cutter crossed and passing around the pulley in a reverse direction to the direction in which it; passes around the pipe.

In testimony whereof I have hereunto subscribed my name.

SYLVEWIER I. DENISON.

Witnesses:

EDWARD C. DAVIDSON, MAMIE J. KELLEY. 

